/*
 * Copyright 2016 KairosDB Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.kairosdb.core.http;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import jakarta.servlet.*;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.ws.rs.core.Response;
import java.io.IOException;


public class LoggingFilter implements Filter
{
	private static final Logger log = LoggerFactory.getLogger(LoggingFilter.class);

	@Override
	public void init(FilterConfig filterConfig) throws ServletException
	{
	}

	@Override
	public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException
	{
		if (log.isDebugEnabled())
		{

			String sb = servletRequest.getRemoteAddr() + " - " +
					((HttpServletRequest) servletRequest).getRequestURI();
			log.debug(sb);
		}

		filterChain.doFilter(servletRequest, servletResponse);

		if (((HttpServletResponse) servletResponse).getStatus() ==
				Response.Status.SERVICE_UNAVAILABLE.getStatusCode())
			log.warn("Rejected response for Request" + getRequestString(servletRequest));
	}

	private String getRequestString(ServletRequest servletRequest)
	{
		String sb = servletRequest.getRemoteAddr() + " - " +
				((HttpServletRequest) servletRequest).getRequestURI();
		return sb;
	}

	@Override
	public void destroy()
	{
	}
}
